*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg:      #0c0e12;
  --surface: #12151a;
  --card:    #191c22;
  --border:  #25292f;
  --muted:   #78818c;
  --text:    #e0e8f0;
  --accent:  #2f69f3;
  --green:   #22c55e;
  --yellow:  #f59e0b;
  --red:     #ef4444;
}
html, body { height: 100%; background: var(--bg); color: var(--text);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; }

/* layout */
.app { display: flex; height: 100vh; overflow: hidden; }
.sidebar { width: 210px; flex-shrink: 0; background: var(--surface);
  border-right: 1px solid var(--border); display: flex; flex-direction: column; overflow-y: auto; }
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }
.toolbar { display: flex; align-items: center; gap: 8px; padding: 9px 14px;
  background: var(--surface); border-bottom: 1px solid var(--border); flex-shrink: 0; }
.content { flex: 1; overflow-y: auto; padding: 16px; }
.content.map-content { padding: 0; overflow: hidden; }

/* sidebar */
.sidebar-header { padding: 14px 14px 10px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.app-title { font-size: 17px; font-weight: 700; }
.app-subtitle { font-size: 9px; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 2px; }
.mode-tabs { display: flex; gap: 2px; padding: 8px; flex-shrink: 0; }
.mode-tab { flex: 1; padding: 4px 0; text-align: center; font-size: 10px; font-weight: 600;
  letter-spacing: 0.05em; border-radius: 4px; cursor: pointer; color: var(--muted); user-select: none; }
.mode-tab.active { background: var(--accent); color: #fff; }
.route-section { padding: 0 6px 8px; flex-shrink: 0; }
.route-section-label { font-size: 9px; color: var(--muted); letter-spacing: 0.1em;
  text-transform: uppercase; padding: 6px 6px 3px; }
.route-btn { display: flex; align-items: center; gap: 8px; width: 100%; padding: 6px 8px;
  border-radius: 5px; border: none; background: none; cursor: pointer; color: var(--text);
  font-size: 12px; text-align: left; }
.route-btn:hover { background: var(--card); }
.route-btn.active { background: var(--card); font-weight: 600; }
.route-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.route-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* model card */
.model-card { margin: 8px 8px 12px; border: 1px solid var(--border); border-radius: 7px;
  overflow: hidden; flex-shrink: 0; }
.model-card-hdr { display: flex; justify-content: space-between; align-items: center;
  padding: 7px 10px; background: var(--card); cursor: pointer; font-size: 10px; font-weight: 600;
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; user-select: none; }
.model-card-body { padding: 10px; font-size: 11px; line-height: 1.7; color: var(--muted); }
.model-card-body.hidden { display: none; }
.legend-row { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 4px; }
.lp { padding: 1px 6px; border-radius: 3px; font-size: 10px; font-weight: 600;
  white-space: nowrap; flex-shrink: 0; margin-top: 1px; }
.lp-green  { background: var(--green);  color: #fff; }
.lp-yellow { background: var(--yellow); color: #000; }
.lp-red    { background: var(--red);    color: #fff; }
.lp-tunnel { background: #1e3a6e; color: #93c5fd; border: 1px solid #3b5998; }
.lp-gray   { background: var(--border); color: var(--muted); }

/* toolbar */
.panel-tabs { display: flex; gap: 2px; background: var(--card); border-radius: 6px; padding: 2px; }
.panel-tab { padding: 4px 11px; border-radius: 4px; font-size: 12px; cursor: pointer;
  color: var(--muted); user-select: none; white-space: nowrap; }
.panel-tab.active { background: var(--accent); color: #fff; }
.tb-spacer { flex: 1; }
.status-txt { font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis; max-width: 200px; }
.btn { padding: 5px 11px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--card); color: var(--text); font-size: 12px; cursor: pointer; white-space: nowrap; }
.btn:hover:not(:disabled) { background: var(--border); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-on    { border-color: var(--green); color: var(--green); background: #0a200a; }
.btn-clear { border-color: var(--red); color: var(--red); }
.refresh-select { background: var(--card); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; font-size: 11px; padding: 4px 6px; cursor: pointer; }
#bandOpacity { accent-color: #93c5fd; vertical-align: middle; cursor: pointer; }

/* vehicle cards */
.vehicle-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.vcard { background: var(--card); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; display: flex; flex-direction: column; gap: 0; }
.vcard-hdr { display: flex; align-items: center; justify-content: space-between; }
.vcard-id  { font-size: 16px; font-weight: 700; }
.late-pill { padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; color: #fff; }

/* next stop */
.next-stop-block { margin: 8px -12px; padding: 8px 12px;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: #15191f; }
.next-stop-label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted); margin-bottom: 3px; }
.next-stop-name  { font-size: 16px; font-weight: 700; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.next-stop-name.tunnel-stop { color: #93c5fd; }

/* ghost vehicle (tunnel estimation) */
.vcard.ghost-card { opacity: 0.75; border-style: dashed; }
.ghost-label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.05em;
  color: #93c5fd; margin-bottom: 2px; }
@keyframes ghost-pulse { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }
.ghost-marker-svg { animation: ghost-pulse 2s ease-in-out infinite; }

.vcard-dest { font-size: 12px; color: var(--muted); margin-top: 7px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.vcard-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.tag { background: var(--border); color: var(--muted); padding: 2px 6px;
  border-radius: 3px; font-size: 10px; }
.tag-tunnel { background: #1e3a6e; color: #93c5fd; border: 1px solid #3b5998; }

/* empty / error */
.empty { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-icon  { font-size: 44px; margin-bottom: 10px; }
.empty-title { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 6px; }

/* stats */
.stat-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.stat-box { background: var(--card); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 16px; min-width: 90px; }
.stat-box-wide { flex: 1 1 100%; }
.stat-lbl { font-size: 9px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; }
.stat-lbl select { background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 4px; font-size: 9px; padding: 1px 4px; margin: 0 2px; }
.stat-val { font-size: 26px; font-weight: 700; margin-top: 2px; }
.date-range-row { display: flex; gap: 6px; align-items: center; margin: 6px 0 2px; }
.date-range-row input[type="date"] { background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 4px; font-size: 11px; padding: 2px 6px; }
.btn-sm { font-size: 10px; padding: 2px 10px; }
.pct-row { display: flex; gap: 16px; background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 16px; margin-bottom: 12px; flex-wrap: wrap; }
.pct-item { text-align: center; }
.pct-label-item { display: flex; align-items: center; }
.pct-row-label { font-size: 13px; font-weight: 700; color: var(--text); white-space: nowrap; }
.pct-lbl  { font-size: 9px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; }
.pct-val  { font-size: 22px; font-weight: 700; color: var(--accent); }
.pct-unit { font-size: 10px; color: var(--muted); }
#tripChart { width: 100%; border-radius: 8px; display: block; cursor: crosshair; }
.chart-legend { display: flex; gap: 16px; font-size: 11px; color: var(--muted); margin-top: 6px; align-items: center; }
.ld { display: inline-block; width: 14px; height: 3px; border-radius: 2px;
  vertical-align: middle; margin-right: 4px; }
.export-row { margin-top: 12px; display: flex; gap: 8px; align-items: center; }

/* map */
#mapContainer { width: 100%; height: 100%; }
.leaflet-container { background: #0c0e12; }
.map-vehicle-popup { font-family: 'Helvetica Neue', sans-serif; font-size: 12px;
  background: #191c22; color: #e0e8f0; border: 1px solid #25292f; border-radius: 6px; }
.map-legend { position: absolute; bottom: 28px; right: 10px; z-index: 1000;
  background: rgba(18,21,26,0.92); border: 1px solid #25292f; border-radius: 6px;
  padding: 8px 12px; font-size: 11px; color: #78818c; }
.map-legend-row { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
.map-legend-row:last-child { margin-bottom: 0; }
.ml-line { width: 20px; height: 3px; border-radius: 2px; }
.ml-dashed { width: 20px; height: 0; border-top: 3px dashed #555; }
.map-no-gtfs { position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
  z-index: 1000; background: rgba(18,21,26,0.92); border: 1px solid #25292f;
  border-radius: 6px; padding: 6px 14px; font-size: 11px; color: #78818c;
  white-space: nowrap; }

/* tunnel closure banner */
.tunnel-closure-banner { padding: 8px 14px; border-radius: 6px; font-size: 12px;
  font-weight: 600; margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.tunnel-closure-banner.official { background: rgba(239,68,68,0.15); border: 1px solid var(--red);
  color: var(--red); }
.tunnel-closure-banner.likely { background: rgba(245,158,11,0.15); border: 1px solid var(--yellow);
  color: var(--yellow); }
.tunnel-closure-icon { font-size: 14px; }
.tunnel-closure-map-banner { position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
  z-index: 1000; padding: 6px 14px; border-radius: 6px; font-size: 11px;
  font-weight: 600; display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.tunnel-closure-map-banner.official { background: rgba(239,68,68,0.92); color: #fff; }
.tunnel-closure-map-banner.likely { background: rgba(245,158,11,0.92); color: #000; }

/* alerts tab badge */
.alerts-badge { display: inline-block; min-width: 14px; height: 14px; line-height: 14px;
  padding: 0 4px; border-radius: 7px; font-size: 9px; font-weight: 700;
  text-align: center; background: var(--red); color: #fff; vertical-align: middle; margin-left: 3px; }

/* alert dots on sidebar routes */
.alert-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; margin-left: auto; }
.alert-dot-severe  { background: var(--red); box-shadow: 0 0 4px var(--red); }
.alert-dot-warning { background: var(--yellow); }
.alert-dot-info    { background: var(--accent); }

/* alerts panel */
.alert-card { background: var(--card); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; margin-bottom: 10px; border-left: 3px solid var(--border); }
.alert-card.alert-severe  { border-left-color: var(--red); }
.alert-card.alert-warning { border-left-color: var(--yellow); }
.alert-card.alert-info    { border-left-color: var(--accent); }
.alert-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.alert-type { font-size: 10px; font-weight: 700; letter-spacing: 0.05em; color: var(--muted);
  text-transform: uppercase; }
.alert-severity { font-size: 9px; font-weight: 600; padding: 1px 6px; border-radius: 3px; }
.alert-severity.alert-severe  { background: var(--red); color: #fff; }
.alert-severity.alert-warning { background: var(--yellow); color: #000; }
.alert-severity.alert-info    { background: var(--accent); color: #fff; }
.alert-subject { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.alert-message { font-size: 12px; color: var(--muted); line-height: 1.5; margin-bottom: 6px; }
.alert-meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 10px; color: var(--muted); }
.alert-routes { background: var(--border); padding: 1px 6px; border-radius: 3px; }
.alert-effect { background: var(--border); padding: 1px 6px; border-radius: 3px; text-transform: lowercase; }
.alert-time { font-size: 10px; color: var(--muted); margin-top: 4px; }

@media (max-width: 640px) { .sidebar { width: 170px; } }
@media (max-width: 440px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; height: auto; max-height: 40vh; flex-direction: row;
    flex-wrap: wrap; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--border); }
}